From mboxrd@z Thu Jan 1 00:00:00 1970 From: Harry Wentland Subject: [PATCH] drm/amd/display: Work around race beetween hw_done and wait_for_flip Date: Fri, 28 Sep 2018 09:16:06 -0400 Message-ID: <20180928131606.15931-1-harry.wentland@amd.com> References: <1537795907-1168-1-git-send-email-shirish.s@amd.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <1537795907-1168-1-git-send-email-shirish.s-5C7GfCeVMHo@public.gmane.org> List-Id: Discussion list for AMD gfx List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: amd-gfx-bounces-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org Sender: "amd-gfx" To: amd-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org, shirish.s-5C7GfCeVMHo@public.gmane.org, sunpeng.li-5C7GfCeVMHo@public.gmane.org Cc: Harry Wentland W1doeV0KVGhlcmUgaXMgYSByYWNlIHRoYXQgYmV0d2VlbiBkcm1fY3J0Y19jb21taXRfaHdfZG9u ZSBhbmQKZHJtX2F0b21pY19oZWxwZXJfd2FpdF9mb3JfZmxpcCB3aGVyZSB0aGUgcG9zc2liaWx0 eSBleGlzdCBmb3IgdGhlCmNydGMtPmNvbW1pdCB0byBiZSBjbGVhcmVkIGFmdGVyIHRoZSBudWxs IGNoZWNrIGluIHdhaXRfZm9yX2ZsaXBfZG9uZQpidXQgYmVmb3JlIHRoZSBjYWxsIHRvIHdhaXRf Zm9yX2NvbXBsZXRpb25fdGltZW91dCBvbiBjb21taXQtPmZsaXBfZG9uZS4KCltIb3ddClRha2Ug YSByZWZlcmVuY2UgdG8gYWxsIGNvbW1pdHMgaW4gdGhlIHN0YXRlIGJlZm9yZQpkcm1fY3J0Y19j b21taXRfaHdfZG9uZSBpcyBjYWxsZWQgYW5kIHJlbGVhc2UgdGhvc2UgYWZ0ZXIKZHJtX2F0b21p Y19oZWxwZXJfd2FpdF9mb3JfZmxpcCBoYXMgZmluaXNoZWQuCgpTaWduZWQtb2ZmLWJ5OiBIYXJy eSBXZW50bGFuZCA8aGFycnkud2VudGxhbmRAYW1kLmNvbT4KLS0tCgpXb3VsZCBzb21ldGhpbmcg bGlrZSB0aGlzIHdvcms/IEkgZ2V0IHRoZSBzdHJvbmcgc2Vuc2UgdGhhdCB0aGlzIGhhcHBlbnMK YmVjYXVzZSBJbnRlbCBhbmQgSU1YIHVzZSB0aGUgaGVscGVycyBpbiB0aGUgb3RoZXIgb3JkZXIs IGhlbmNlIHRoZQpkZXBlbmRlbmN5IGJldHdlZW4gaHdfZG9uZSBhbmQgd2FpdF9mb3JfZmxpcCB3 YXMgbWlzc2VkLgoKSSdkIHJhdGhlciBtYWtlIGl0IG9idmlvdXMgdGhhdCB0aGVyZSdzIChhKSBu byByZWFzb24gdG8gcmVvcmRlciB0aGVzZQp0d28gY2FsbHMgb24gQU1EIEhXIChvdGhlciB0aGFu IHRoaXMgdW5leHBlY3RlZCBkZXBlbmRlbmN5KSBhbmQgKGIpIHRoaXMKaXMgc29tZXRoaW5nIHdl J2xsIHByb2JhYmx5IHdhbnQgdG8gZml4IGluIERSTS4KClNvcnJ5IGl0IHRvb2sgbWUgYSB3aGls ZSB0byB1bmRlcnN0YW5kIHdoYXQgd2FzIGhhcHBlbmluZyBoZXJlLiBCZWVuCmJ1c3kgYXQgWERD IHVudGlsIEpvcmRhbiBhbmQgTGVvIHJlbWluZGVkIG1lIHRvIHRha2UgYW5vdGhlciBsb29rLgoK SGFycnkKCiBkcml2ZXJzL2dwdS9kcm0vYW1kL2Rpc3BsYXkvYW1kZ3B1X2RtL2FtZGdwdV9kbS5j IHwgMTUgKysrKysrKysrKysrKysrCiAxIGZpbGUgY2hhbmdlZCwgMTUgaW5zZXJ0aW9ucygrKQoK ZGlmZiAtLWdpdCBhL2RyaXZlcnMvZ3B1L2RybS9hbWQvZGlzcGxheS9hbWRncHVfZG0vYW1kZ3B1 X2RtLmMgYi9kcml2ZXJzL2dwdS9kcm0vYW1kL2Rpc3BsYXkvYW1kZ3B1X2RtL2FtZGdwdV9kbS5j CmluZGV4IDBmMTBkOTIwYTc4NS4uZWQ5YTdkNjgwYjYzIDEwMDY0NAotLS0gYS9kcml2ZXJzL2dw dS9kcm0vYW1kL2Rpc3BsYXkvYW1kZ3B1X2RtL2FtZGdwdV9kbS5jCisrKyBiL2RyaXZlcnMvZ3B1 L2RybS9hbWQvZGlzcGxheS9hbWRncHVfZG0vYW1kZ3B1X2RtLmMKQEAgLTQ2MjYsMTIgKzQ2MjYs MjcgQEAgc3RhdGljIHZvaWQgYW1kZ3B1X2RtX2F0b21pY19jb21taXRfdGFpbChzdHJ1Y3QgZHJt X2F0b21pY19zdGF0ZSAqc3RhdGUpCiAJfQogCXNwaW5fdW5sb2NrX2lycXJlc3RvcmUoJmFkZXYt PmRkZXYtPmV2ZW50X2xvY2ssIGZsYWdzKTsKIAorCS8qCisJICogV09SS0FST1VORDogVGFrZSBh IHJlZiBmb3IgYWxsIGNydGNfc3RhdGUgY29tbWl0cyB0byBhdm9pZAorCSAqIGEgcmFjZSB3aGVy ZSB0aGUgY29tbWl0IGdldHMgZnJlZWQgYmVmb3JlIGNvbW1pdF9od19kb25lIGhhZAorCSAqIGEg Y2hhbmNlIHRvIGxvb2sgZm9yIGNvbW1pdC0+ZmxpcF9kb25lCisJICovCisJZm9yX2VhY2hfbmV3 X2NydGNfaW5fc3RhdGUoc3RhdGUsIGNydGMsIG5ld19jcnRjX3N0YXRlLCBpKQorCQlkcm1fY3J0 Y19jb21taXRfZ2V0KG5ld19jcnRjX3N0YXRlLT5jb21taXQpOworCiAJLyogU2lnbmFsIEhXIHBy b2dyYW1taW5nIGNvbXBsZXRpb24gKi8KIAlkcm1fYXRvbWljX2hlbHBlcl9jb21taXRfaHdfZG9u ZShzdGF0ZSk7CiAKIAlpZiAod2FpdF9mb3JfdmJsYW5rKQogCQlkcm1fYXRvbWljX2hlbHBlcl93 YWl0X2Zvcl9mbGlwX2RvbmUoZGV2LCBzdGF0ZSk7CiAKKwkvKgorCSAqIFdPUktBUk9VTkQ6IHB1 dCB0aGUgY29tbWl0IHJlZnMgZnJvbSBhYm92ZSAoc2VlIGNvbW1lbnQgb24KKwkgKiB0aGUgZHJt X2NydGNfY29tbWl0X2dldCBjYWxsIGFib3ZlKQorCSAqLworCWZvcl9lYWNoX25ld19jcnRjX2lu X3N0YXRlKHN0YXRlLCBjcnRjLCBuZXdfY3J0Y19zdGF0ZSwgaSkKKwkJZHJtX2NydGNfY29tbWl0 X3B1dChuZXdfY3J0Y19zdGF0ZS0+Y29tbWl0KTsKKwogCWRybV9hdG9taWNfaGVscGVyX2NsZWFu dXBfcGxhbmVzKGRldiwgc3RhdGUpOwogCiAJLyoKLS0gCjIuMTcuMQoKX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KYW1kLWdmeCBtYWlsaW5nIGxpc3QKYW1k LWdmeEBsaXN0cy5mcmVlZGVza3RvcC5vcmcKaHR0cHM6Ly9saXN0cy5mcmVlZGVza3RvcC5vcmcv bWFpbG1hbi9saXN0aW5mby9hbWQtZ2Z4Cg==